<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        *{
            margin: 0;padding: 0;
        }
        
        .search{
            margin-left: auto;
            margin-right: auto;
            margin-top: 20px;
            margin: 100px;width: 240px;
            height: 40px;position: relative;
        }
        button{
            position: absolute;
            top: 50%;
            margin-top: -11px;
            right: 5px; width: 23px;height: 22px;
            background: url("img/icon4.png");
            border: none; 
            /* 去除样式 */
        }
        input{
            padding-left: 20px;border: none;
            border-radius: 30px;outline: none;
            width: 220px;height: 40px;background: #eee;
        }
        </style>
    </head>
    <body>
        <div class="search">
            <input type="text" placeholder="搜索">
            <button></button>
        </div>
    
</body>
</html>